Ultra Low Current
3v LED Flasher #3 --
February 26, 2011
circuit takes advantage of a tiny LMC7215 low current draw voltage comparator from
National Semiconductor and a super efficient green LED from King Bright. The 3v
powered circuit forms a classic pulse generator circuit, which drives the LED.
The pulse width is set at about 20ms, the pulse rate is about 0.5Hz and the peak LED
current is only 100ua.